Photochromic glasses (also called transition lenses) at Chashmaywaly are frames designed to work with lenses that automatically darken in sunlight and turn clear indoors. No need to switch between regular glasses and sunglasses — one pair handles everything. Frames start from PKR 1,200, with free delivery and COD across Pakistan.
How Photochromic Lenses Work
Photochromic lenses contain special molecules that react to UV light. When you step outdoors, UV radiation causes the molecules to darken, turning your clear glasses into tinted sunglasses within 30–60 seconds. Step back indoors, and they gradually clear over 2–3 minutes. Modern photochromic technology works well in Pakistan's bright, UV-heavy climate. For a detailed pricing comparison, read our transition lenses guide.
Photochromic vs. Regular Sunglasses vs. Clear Glasses
| Feature | Photochromic | Sunglasses | Clear Glasses |
|---|---|---|---|
| Indoor Use | Clear (fully transparent) | Too dark | Clear |
| Outdoor Use | Auto-darkens (grey/brown tint) | Always dark | No sun protection |
| UV Protection | UV400 (always on) | UV400 | Optional |
| Convenience | One pair for everything | Need separate glasses for indoors | Need separate sunglasses |
| Driving | Moderate (car windshields block some UV) | Better (always dark) | No help |
| Price | Frame + photochromic Rx lenses | Frame only or with fixed tint | Frame + clear Rx lenses |
Best Frames for Photochromic Lenses
- Full-rim acetate — Best for prescription photochromic lenses. The rim hides lens edges and holds thicker lenses securely.
- Full-rim metal — Clean look with adjustable nose pads. Works well with thinner prescriptions.
- Browline — The acetate brow bar adds style while providing a secure lens hold.
How to Order
- Pick a frame from this collection.
- Order it — free delivery across Pakistan.
- Take it to your local optician and ask for photochromic (transition) lenses with your prescription.
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